A customer holds up an Apple iPhone 5 as he poses for a photo during an exclusive sale by Belgian operator Mobistar in BrusselsBy using Foo Yun Chee BRUSSELS (Reuters) – The European Union is looking into potential antitrust violations involving the distribution of Apple Inc's iPhones and iPads, after receiving what sources stated have been casual complaints from telecoms operators. The complaints contain handset subsidies and advertising that the sector's most useful know-how enterprise sign-off with operators that raise its smartphones and pills, and also includes subsidies that carriers pay to Apple, some of the three sources instructed Reuters on Friday. …